Standards
Sources and Evidence Policy
These are the primary sources behind the guides, grouped by type. Each guide lists the exact pages it relies on, with dates.
Search engines
- Google Search Central: localized versions (hreflang methods, values, x-default, sitemaps).
- Google Search Central: multi-regional and multilingual sites (URL structures, redirects, crawling).
- Google Search Central: canonicalization.
- Google Search Central: site moves, and Search Console Help: Change of Address tool.
- Google Search Central: documentation updates log.
- Bing Webmaster Blog: country and language (2011; dated, used with care).
Standards
- RFC 5646 (BCP 47): Tags for Identifying Languages.
- W3C: Language tags in HTML and XML and W3C: Declaring language in HTML.
Great Britain
- Gambling Commission public register, guidance and news pages cited in each guide.
Germany
- GGL whitelist and GGL FAQ pages.
- GlüStV 2021 text as published by Bayern.Recht.
Spain
- Ley 13/2011 (BOE consolidated text), royal decrees and court rulings published in the BOE.
- DGOJ operator search.
Canada
- Criminal Code, section 207.
- iGaming Ontario operator directory, AGCO and iGaming Ontario pages; Government of Alberta factsheets; Office québécois de la langue française.
Rules for secondary sources
We use a law firm note or trade press report only when a primary source is missing or unreachable, and the guide names it as such. Example: Alberta's market launch date is reported by a law firm and trade press, and the Canada guide says so.
What we do not use
We do not use paid placements, affiliate feeds, operator press releases as proof of rules, or unattributed statistics. We do not publish search volumes or traffic estimates.